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Miscellaneous

Alternatives to Oracle Java / Web Start

There are a few alternatives to Oracle Java, including an alternative for Java WebStart (which Oracle deprecated).

Name Price JCK certified Versions OpenJFX/JavaFX¹ Supported platforms
Eclipse Adoptium free no 8+ no Linux (.deb, .rpm, .tar), Mac, Windows
Amazon Corretto free yes 8, 11 Bundled with 8 only Linux (.deb, .rpm, .tar), Mac, Windows
Azul Zulu free yes 6+ Bundled (choose JDK FX download) Linux (.deb, .rpm, .tar), Mac, Windows
Bellsoft Liberica free 8+ Bundled (choose Full JDK download) inux (.deb, .rpm, .tar), Mac, Windows
Oracle OpenJDK free yes 7+ Linux (⚠ .tar only), Mac, Windows
Red Hat OpenJDK free yes 8+ Separate download for Java 8, Windows only Linux (⚠ RHEL only), Windows

Due to Oracle no longer releasing updates for long-term support (LTS) releases under a permissive license, others have begun offering builds.Linux distributions have always offered their builds, and Windows also offers one now, which can be installed with the Windows Package Manager.

[Fixed] Unsigned application requesting unrestricted access to system

Subject/ Problem Description

The following error is displayed when launching applications signed with the MD5withRSA or MD5withDSA algorithms after upgrading to Java.

Unable to launch the application.
Unsigned application requesting unrestricted access to system
Unsigned application requesting unrestricted access to system. 
The following resource is signed with a weak signature algorithm MD5withRSA 
and is treated as unsigned: http://example.net/ExampleApplication.jar
Symptoms / Root Cause:

Applications signed with the MD5withRSA or MD5withDSA algorithms are treated as unsigned by Java starting with the Java 8 Update 131 release.